The cage must be of number six gage steel, conform to OCE
drawing 40-21-01, and be permanently attached to the floor.
There must be only one doorway that allows access to and from the
evidence room. Entrance into the evidence room will require opening two successive
doors. When an interior steel mesh cage is used, the cage door will suffice as the
second door. In this case, the outer door must be a solid core wooden door. The
door must be at least 1-inch thick or be a hollow core door reinforced with 1/8-
inch steel plate. Number six gage steel mesh may also be welded onto a metal frame
to meet specifications.
If steel mesh cage is not used, adhere to either of the
The doorway of the evidence room must be covered by two doors hung one behind
If a barred door is used, the vertical steel bars must be at least 3/8-inch
They must not be more than 4 inches apart.
Horizontal bars are
welded to the vertical bars. They are spaced so that opening do not exceed
32 square inches.
Door hinges should be installed on the inside. However, if exposed, the pins will
be spot welded or bradded to prevent removal. Specifications for construction of
new evidence rooms must include these standards.
Evidence rooms under 24-hour surveillance need only one door.
In this case, the
single door will be solid wood or covered with metal to prevent seeing into the
evidence room. The doors will be secured with a high security padlock.
The outer door will be secured by one high security, key-opened padlock.
These padlocks will conform to military specification MIL-P43607 (GL)(High Security
Padlock) FSN 5340-00799-8016 or FSN 5340-00799-8248.
The changeable combination
padlock for the inner door will conform to federal specification FF-P-110 (Sergent
and Greenleaf 8077A and 8078A series).
This changeable combination padlock is
intended for use only as an indoor or protected area reuseable seal.
It is not
intended for service either outdoors or to protect against forced entry. Sergeant
and Greenleaf padlock, FSN 5340-00285-6523, is the minimum acceptable changeable
combination lock authorized.
The number of windows must be kept to an essential minimum.
windows will be covered with steel or iron bars or steel mesh.
are used, they will be at least 3/8-inch thick.
Vertical bars must be
welded to horizontal bars and spaced so that openings between bars do not
exceed 32 square inches.
Ends of the bars must be securely embedded in the
wall or welded to a steel channel frame.
This must be fastened securely
to the window casing.
Acceptable steel mesh can be locally fabricated from high
It cannot be less than 15/100-inch thick with a grid of not more
than 2 inches from center to center.
Number six gage steel mesh with a 2-inch
diamond grid may be used in areas where high carbon steel is not readily